
// let b = 1
this.b = 1;
let count = 0
Object.defineProperty(this, 'b', {
    get () {
        // console.log('b get', this);
        // count++
        return Reflect.get(this, 'b')
    },
})
if (this.b === 1 && this.b === 2 && this.b === 3) {
    console.log('b 条件成立！')
}
console.log(this.b)